import moment from 'moment'

//格式化时间为论坛风格
export function time_bbs(value) {
  var date = new Date(value)
  if (isNaN(date)) {
    return ''
  }
  var delta = new Date() - date
  var now_threshold = parseInt(now_threshold, 10)
  if (isNaN(now_threshold)) {
    now_threshold = 0;
  }
  if (delta <= now_threshold) {
    return '刚刚';
  }
  var units = null;
  var conversions = {
    '毫秒': 1, // ms    -> ms
    '秒': 1000,   // ms    -> sec
    '分钟': 60,     // sec   -> min
    '小时': 60,     // min   -> hour
    '天': 24,     // hour  -> day
    '月': 30,     // day   -> month (roughly)
    '年': 12      // month -> year
  };
  for (var key in conversions) {
    if (delta < conversions[key]) {
      break;
    } else {
      units = key; // keeps track of the selected key over the iteration
      delta = delta / conversions[key];
    }
  }
  // pluralize a unit when the difference is greater than 1.
  delta = Math.floor(delta);
  return [delta, units, "前"].join("");
}


export function time_format(value, format) {
  if (!format) {
    format = 'YYYY-MM-DD HH:mm:ss'
  }
  return moment(value).format(format)
}

/** 数字金额大写转换(可以处理整数,小数,负数) */
export function smalltoBIG(n) {
  var fraction = ['角', '分'];
  var digit = ['零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'];
  var unit = [['元', '万', '亿'], ['', '拾', '佰', '仟']];
  var head = n < 0 ? '欠' : '';
  n = Math.abs(n);

  var s = '';

  for (var i = 0; i < fraction.length; i++) {
    s += (digit[Math.floor(n * 10 * Math.pow(10, i)) % 10] + fraction[i]).replace(/零./, '');
  }
  s = s || '整';
  n = Math.floor(n);

  for (var i = 0; i < unit[0].length && n > 0; i++) {
    var p = '';
    for (var j = 0; j < unit[1].length && n > 0; j++) {
      p = digit[n % 10] + unit[1][j] + p;
      n = Math.floor(n / 10);
    }
    s = p.replace(/(零.)*零$/, '').replace(/^$/, '零') + unit[0][i] + s;
  }
  return head + s.replace(/(零.)*零元/, '元').replace(/(零.)+/g, '零').replace(/^整$/, '零元整');
}

//金额格式化
export function formatMoney(val, digit = 2) {
  if(val == null) return 0
  return  parseFloat(val).toFixed(digit)
}